Table 7. Intracluster correlation coefficients (ICCs) for STH re-infection prevalences, four months post-deworming (N = 571, from the 9 control schools).

STH	ICC	95% CI
Ascaris lumbricoides	0·042	(0·009 to 0·085)
Trichuris trichiura	0·127	(0·062 to 0·231)
Hookworm	0·033	(0·000 to 0·067)
Any STH	0·121	(0·046 to 0·229)